Cover impossible change picture

Hello, I have a problem with the cover, I can change it once and then when I put another photo it is displayed in the profile modification but when I validate it does not change. I tried in administrator mode but the problem persists. I made a restoration of my site I do not know if the problem comes from that. Thank you in advance for your assistance

• This topic was modified 4 years, 11 months ago by melchi2.